“signal tower”的概念、定义、翻译、参考文献-科学参考

单词	signal tower
释义	signal tower [`sig·nǝl ´tau̇·ǝr] ^{CIVIL ENGINEERING} A switch tower from which railroad signals are displayed or controlled.
随便看	endosperm endosperm nucleus endospore endostome endostyle endosulfan endosymbiont endosymbiont theory dry well dry whole milk dry wire drawing Drzewiecki theory DS DSA DSB D scan D scope DSECT DSN D sounding DSRV DSS Dst DTL DTS

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